CN203716145U - Orientation steel pipe locking prestress multiple anchor rope - Google Patents
Orientation steel pipe locking prestress multiple anchor rope Download PDFInfo
- Publication number
- CN203716145U CN203716145U CN201320809922.8U CN201320809922U CN203716145U CN 203716145 U CN203716145 U CN 203716145U CN 201320809922 U CN201320809922 U CN 201320809922U CN 203716145 U CN203716145 U CN 203716145U
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- steel pipe
- orientation
- anchor
- guiding steel
- locking
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Abstract
The utility model relates to an orientation steel pipe locking prestress multiple anchor rope. The orientation steel pipe locking prestress multiple anchor rope comprises an orientation steel pipe and a steel strand, wherein the orientation steel pipe and the steel strand are fixedly connected together through an anchor disc, and the head part of the orientation steel pipe, three broaching reinforcing steel bars which are distributed in a shape like the Chinese character BA and an orientation tip are fixed through the anchor disc; the front end of the orientation steel pipe is provided with a plurality of grouting holes; the steel strand and the orientation steel pipe are locked together through a locking snap ring; the grouting holes are distributed at intervals to form a quincunx shape. The orientation steel pipe locking prestress multiple anchor rope is simple in structure, low in cost and applicable to the miscellaneous fill, fine sand, saturated soil and soft soil; after being implemented, the pull force of each anchor rod is greatly increased, and the safety is higher.
Description
Technical field
The utility model relates to a kind of prestress anchorage cable, relates in particular to many anchor cables of a kind of guiding steel pipe locking prestressing force.
Background technology
Along with the development of national economy, highrise building is more and more, and deep foundation ditch is also more and more.National regulation regulation, all deep foundation ditchs all must be done pattern foundation pit supporting structure.The conventionally form of pattern foundation pit supporting structure has: the various ways such as soldier pile, soil nail wall.The horizontal thrust on the foundation ditch limit that composite soil nailing wall, soldier pile are subject to will be resisted by the horizontal pull of prestressed anchor or anchor cable, so the support system such as soldier pile, composite soil nailing wall all will be established prestressed anchor or anchor cable, make anchor pole or anchor cable become as a whole drawknot body with the soil body, accomplish economical rationality.
But in prestressed anchor or anchor cable construction, there is following difficult point: (1) pore-forming is a difficult problem on soft soil foundation, saturated soil, sand grains soil, opaque fine sand soil, and this is the key in construction technology; (2) in construction work, because first construction is basic, once commencement of works requires foundation pit dewatering fast, excavation is fast, and the duration is short; (3) in Precipitation Process, from foundation ditch limit more close to, the water in the soil body more easily oozes down, be difficult to ooze down, but a rate of advance is fast from water in the soil body on more than 10 meter, foundation ditch limit, the time does not allow, so water cannot be penetrated in gutter completely; (4) general soil body upper strata major part is miscellaneous fill, sand grains soil, opaque fine sand soil, can keep moisture here and cause water can not be penetrated in time gutter, so the soil body existing is mostly saturated soil, and saturated soil cannot pore-forming, the easy collapse hole of manual pore-forming and machine drilling; (5) prestressed anchor or anchorage cable design, generally all more than 10m, penetrate soil body slipping face, anchor in stable soil layer, could produce effective prestress pulling force like this.Therefore, ill-conditioned, the hole depth of the soil body during pore-forming of prestressed anchor or anchor cable, easily cave in, easy-formation not.There is no qualified hole, with regard to it doesn't matter, carry out next procedure---insert bolt grouting.
Conventional hole forming method is luoyang spade manual pore-forming method and machine drilling sleeve pipe follow-up hole forming method at present.The shortcoming of luoyang spade manual pore-forming method is that efficiency is extremely low, sand grains is native shapeless, at all cannot pore-forming; Machine drilling sleeve pipe follow-up hole forming method is: when drill bit of drilling machine creeps into, fixation holes steel pipe is brought into simultaneously, then in anchor cable or anchor pole inserting hole, on one side slip casting pull out fixed die steel pipe on one side; This hole forming method complex process, to work plane, require high, long in time limit and noise is large, cost is high, only the cost of 1m boring is just between 280 ~ 300 yuan.
Utility model content
The purpose of this utility model is in order to overcome problems of the prior art, provides a kind of guiding steel pipe simple in structure, with low cost locking prestressing force many anchor cables.
Many anchor cables of guiding steel pipe locking prestressing force of the present utility model, it comprises guiding steel pipe and steel strand, described guiding steel pipe and Duo Gen steel strand are fixed together by anchor dish, and described guiding steel pipe head, three are the reaming of falling Eight characters reinforcing bar and guiding tip is fixed by anchor dish; The front end of described guiding steel pipe is provided with several injected holes; Described many steel strand with guiding steel pipe by locking together with snap ring locking.
Described injected hole is arranged and is equidistantly quincunx.
The bore dia of described injected hole is 5mm ~ 8mm.
Described guiding steel pipe interval 3-6m arranges one three and is the reaming of falling Eight characters reinforcing bar.
The utility model compared with prior art has the following advantages:
1, owing to being provided with guiding steel pipe and the steel strand (anchor cable) that lock together in the utility model, and be provided with the reaming reinforcing bar that is the tip of falling the Eight characters, therefore, when becoming flexible surrounding soil in anchor cable 150mm diameter to injecting slurries when lead steel pipe and steel strand (anchor cable) are hammering into the soil body, can make steel strand (anchor cable) fixed with the loosening soil body and slurry around, strengthen its anchor pole friction cross section.
2, owing to being provided with in the utility model, be quincunx injected hole, therefore, by slip casting, form the anchoring section of anchor cable, in saturated soil and grains of sand soil, grouting reinforcement produces frictional resistance, generates pulling force, reaches pore-forming, prestress anchorage cable placement, the one-time formed object of slip casting.
3, the utility model is simple in structure, with low cost, is applicable to miscellaneous fill (refuse soil), powder fine sand, saturated soil, weak soil stratum, is specially adapted to the geology (the Northwest's geology is all generally grains of sand soil, silty clay) of the Northwest.
4, the setting of many of the utility model, is greatly improved the pulling force of every anchor pole, and safety is higher.
Accompanying drawing explanation
Below in conjunction with accompanying drawing to further detailed explanation of the specific embodiment of the present utility model.
Fig. 1 is the utility model structural representation.
In figure: 1-guiding steel pipe, 2-steel strand, 3-guiding tip, 4-anchor dish
5-reaming part 6-locking snap ring, 7-slurry outlet.
The specific embodiment
As many anchor cables of guiding steel pipe locking prestressing force of Fig. 1, it comprises guiding steel pipe 1 and steel strand 2, guiding steel pipe 1 and Duo Gen steel strand 2 are fixed together by anchor dish 4, and guiding steel pipe 1 head, three are the reaming of falling Eight characters reinforcing bar 5 and guiding tip 3 is fixed by anchor dish 4; The front end of guiding steel pipe 1 is provided with several injected holes 7; Together with many steel strand 2 are locked by locking snap ring 6 with guiding steel pipe 1.Injected hole 7 is arranged and is equidistantly quincunx.The bore dia of injected hole 7 is 5mm ~ 8mm.Guiding steel pipe 1 interval 3-6m arranges one three and is the reaming of falling Eight characters reinforcing bar 5.
During use, carry out according to the following steps:
(1) adopt conventional method to layout;
(2) roof-bolter is in place;
(3) roof-bolter is squeezed into the soil body of layouting to design length by guiding steel pipe 1, steel strand 2 in many anchor cables of guiding steel pipe locking prestressing force;
(4) mixing cement grout: mix the early strength admixture of its weight 5% in 42.5 grades of Portland cements, and to make the water/binder ratio of cement grout be 0.45 ~ 0.5, proportion is 1.7 ~ 1.8;
(5) under the condition that is 0.5 ~ 3MPa at pressure, by grouting pump, to guiding steel pipe 1, inject cement grout, until there is cement grout to flow out in anchor pole hole, can stop slip casting;
(6) soil solidifying is after 7 days, and intensity reaches 75% and to described guiding steel pipe locking prestressed anchor, draw the power of dialling to detect when above, and amount detection is no less than 3%, draws to dial power value and be greater than design load.
Claims (4)
1. guiding steel pipe locks many anchor cables of prestressing force, it comprises guiding steel pipe (1) and steel strand (2), it is characterized in that: described guiding steel pipe (1) and many steel strand (2) are fixed together by anchor dish (4), described guiding steel pipe (1) head, three are the reaming of falling Eight characters reinforcing bar (5) and guiding tip (3) is fixing by anchor dish (4); The front end of described guiding steel pipe (1) is provided with several injected holes (7); Together with described many steel strand (2) are locked by locking snap ring (6) with guiding steel pipe (1).
2. many anchor cables of guiding steel pipe locking prestressing force as claimed in claim 1, is characterized in that: described injected hole (7) is arranged and is equidistantly quincunx.
3. many anchor cables of guiding steel pipe locking prestressing force as claimed in claim 1, is characterized in that: the bore dia of described injected hole (7) is 5mm ~ 8mm.
4. many anchor cables of guiding steel pipe locking prestressing force as claimed in claim 1, is characterized in that: described guiding steel pipe (1) interval 3-6m arranges one three and is the reaming of falling Eight characters reinforcing bar (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320809922.8U CN203716145U (en) | 2013-12-11 | 2013-12-11 | Orientation steel pipe locking prestress multiple anchor rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320809922.8U CN203716145U (en) | 2013-12-11 | 2013-12-11 | Orientation steel pipe locking prestress multiple anchor rope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203716145U true CN203716145U (en) | 2014-07-16 |
Family
ID=51155314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320809922.8U Expired - Fee Related CN203716145U (en) | 2013-12-11 | 2013-12-11 | Orientation steel pipe locking prestress multiple anchor rope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203716145U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019452A (en) * | 2015-07-22 | 2015-11-04 | 曾旻 | Combined expanding head and rock-soil body composite anchor cable |
| CN106837394A (en) * | 2017-03-22 | 2017-06-13 | 湖南科技大学 | A kind of anti-disconnected anchor and its construction method for being adapted to roadway with large deformation country rock |
-
2013
- 2013-12-11 CN CN201320809922.8U patent/CN203716145U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019452A (en) * | 2015-07-22 | 2015-11-04 | 曾旻 | Combined expanding head and rock-soil body composite anchor cable |
| CN105019452B (en) * | 2015-07-22 | 2018-09-25 | 中交一航局第四工程有限公司 | Combined type opens up a Rock And Soil multiple anchor cable |
| CN106837394A (en) * | 2017-03-22 | 2017-06-13 | 湖南科技大学 | A kind of anti-disconnected anchor and its construction method for being adapted to roadway with large deformation country rock |
| CN106837394B (en) * | 2017-03-22 | 2019-11-05 | 湖南科技大学 | A kind of anti-anchor and its construction method of breaking being adapted to roadway with large deformation country rock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160426 Address after: 730000, No. 59, Ning Ning Road, Chengguan District, Gansu, Lanzhou Patentee after: Gansu Construction Engineering General Contracting Co., Ltd. Address before: Qilihe District of Gansu city in Lanzhou Province, 730000 West East Road No. 575 Patentee before: Gansu Construction Investement (Holding) Group Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20161211 |